Concept explainers
To find: the values of x and y .
Answer to Problem 12WE
Explanation of Solution
Given:
The diagram:
Concept Used:
Postulate 10: If two parallel lines are cut by a transversal then the corresponding
Theorem 3-2: If two parallel lines are cut by a transversal then the alternate interior angles are congruent.
Sum of measures of all angles of a
Label the given figure as shown below:
In the above figure, lines
That is,
Similarly, lines
That is,
From (1) and (2),
Now, in triangle
In the above figure, lines
That is,
Chapter 3 Solutions
McDougal Littell Jurgensen Geometry: Student Edition Geometry
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